Pontiac G3 Dome Light Bulb Size

The Pontiac G3 dome light requires a unique bulb size of 6461 for the interior lighting system. Data for the specific bulb size covers the range of 2009 to 2010.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2009-2010	6461

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6461

Other Locations

Additional Notes

The 6461 bulb is the sole dome light bulb size listed for the Pontiac G3, covering the 2009-2010 model years.
The 6461 follows the ANSI standard, meaning it meets the electrical and dimensional specifications recognized across the United States and Canada.
It is a festoon-type bulb, which means it is cylindrical in shape and mounts by pressing its end caps into spring clips rather than using a screw or bayonet base.
The 6461 has a 36mm length, which is the measurement used to match festoon bulbs to their housing slots.
It uses an SV8.5 base, a designation that refers to the end cap style specific to festoon bulbs with an 8.5mm cap width.
The bulb operates at 12 volts and draws 5 watts, consistent with standard low-power interior lighting in passenger vehicles.
Because festoon bulbs are sized by length and cap type, substituting a festoon bulb of a different length or base width would result in an improper fit in the Pontiac G3 dome housing.